1. Wave Trains
Waves that travel in groups

2. Shoreline
A place where the land and body of water meet

3. Surf
The breaking of waves

4. Sea Cliff
When waves erodes and undercuts the rock resulting in a steep slope.

5. Wave Period
The time interval between breaking waves. Usually 10s to 20s

6. Sea Stacks
Off shore columns of resistant rock that once connected to the mainland

7. Sea Arches
Forms when ocean wave action continues to erode through a sea cave cutting completely through the rock.

8. Sea Caves
Forms when ocean waves cut large holes into fractured or weaken rock along the base of sea cliffs. Sea caves are commonly made from sedimentary rock.

9. Headlands
Finger shaped projections that form when cliffs made of hard rock erode more slowly than surrounding rock. On many shorelines hard rock will form headlands, and the softer rock will form beaches or bays.

10. Wave-cut terraces
Form when a sea cliff is worn back, producing a nearly level platform beneath the water at the base of the cliff.

11. Beach
Any area of the shoreline made up of material deposited by waves.

12. Longshore Current
A water current that moves the sand along a zigzag pattern along a beach.

13. Barrier Split
An exposed sandbar that is connected to the shoreline.